As the Chicago Cubs and Mayor Rahm Emanuel near a deal on rehabbing Wrigley Field, the owners of the lucrative rooftop clubs overlooking the venerable ballpark yesterday displayed fear of the results.

Rattling a legal saber they've unsheathed before, the rooftop owners reiterated their belief that an agreement allowing signs that block their bird's-eye views would violate not only their contract with the Cubs but also the city's landmark rules for the 99-year-old stadium.

"Any construction that interrupts the rooftop views will effectually drive (the rooftop clubs) out of business and be challenged in a court of law," the owners of 16 rooftop venues said in a written statement.

Cubs and city officials and Wrigleyville Ald. Thomas Tunney, 44th, have been meeting recently on a daily basis to hammer out a deal, but rooftop owners were absent. They were instead represented by Tunney, who also has to juggle the interests of local residents and other businesses, including the Cubs.

Late in the week, Tunney indicated that many of the vexing issues could be resolved by Monday's home opener at Wrigley. The alderman also laid out a framework of an agreement: A Jumbotron-like video screen in left field that would partly block rooftop views and a smaller sign — akin to the Toyota sign now in left field — would go up in right field.

The Ricketts family, owners of the Cubs, want the signs, which will feature revenue-generating ads during games, to help finance a $300 million renovation of the stadium, long adored for its old-time qualities even as it was reviled for its primitive bathrooms and cramp-inducing locker rooms. The Cubs also have proposed spending an additional $200 million in the immediate area of the ballpark to put up a hotel and an office building with a plaza.

Tunney said the Cubs have agreed to create extra parking in Wrigleyville, possibly by constructing a two-level garage that would create up to 500 extra spaces on what is now a gravel lot near Clark and Grace streets. The Cubs also have pledged to help pay for putting extra police on patrol around game times, the alderman said.

Parking and security are concerns long pushed by community groups. But in a sign of just how hard it will be for Tunney to please everyone, residents began circulating an online petition Friday critical of a parking garage in the congested neighborhood, saying bicycles and public transportation should be promoted instead.

"Don't turn Lakeview into a parking lot," stated the petition, signed by more than 130 people as of early Friday evening. "Lakeview is a vibrant community that doesn't need more traffic and pollution. Adding more parking for Wrigley Field will only bring more cars to our neighborhood and make traffic even more unbearable."